Need help with Alpha Blending - Printable Version

Need help with Alpha Blending - Printable Version

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Need help with Alpha Blending - halla - 02-01-2007

Ok I tried the tutorial on vbgamer website.

Code:
Dim rEmptyRect As RECT, dArray() As Byte, sArray() As Byte

MainMenu.Lock rEmptyRect, DDSDMainMenu, DDLOCK_WAIT, 0

DD_PrimarySurf.Lock rEmptyRect, DDSD_Primary, DDLOCK_WAIT, 0

MainMenu.GetLockedArray dArray()

DD_PrimarySurf.GetLockedArray sArray()

Call vbDABLalphablend16(555, 0, sArray(0 + 0, 0), dArray(0 + 0, 0), 200, 64, 32, DDSD_Primary.lPitch, DDSDMainMenu.lPitch, 0)

DD_PrimarySurf.Unlock rEmptyRect

MainMenu.Unlock rEmptyRect

I put that in Form Load of frmMirage.

I also have the DLL file called too.

in modDirectX I have...

Code:
Public DX As New DirectX7

Public DD As DirectDraw7

Public DD_PrimarySurf As DirectDrawSurface7

Public DD_SpriteSurf As DirectDrawSurface7

Public DD_TileSurf As DirectDrawSurface7

Public DD_ItemSurf As DirectDrawSurface7

Public DD_BackBuffer As DirectDrawSurface7

Public DD_Clip As DirectDrawClipper

Public MainMenu As DirectDrawSurface7

Public DDSD_Primary As DDSURFACEDESC2

Public DDSD_Sprite As DDSURFACEDESC2

Public DDSD_Tile As DDSURFACEDESC2

Public DDSD_Item As DDSURFACEDESC2

Public DDSD_BackBuffer As DDSURFACEDESC2

Public DDSDMainMenu As DDSURFACEDESC2

It will compile but gets an error with... MainMenu.Lock rEmptyRect, DDSDMainMenu, DDLOCK_WAIT, 0

If someone could help me out here... or if someone could even do 1 for me so I can learn how it works and do the rest. I dont understand these guides or anything much. I could repay you back in some way im sure.

Reply or get at me on AIM or MSN.

- Tony - 02-01-2007

Ooo I want to try this. Link me plx. :]

:: Pando

- Spodi - 02-01-2007

You can try the people at http://www.gpwiki.org - though they do a good job arguing about tiny things instead of answering questions. :wink:

- halla - 02-01-2007

Ok im getting close. Went to pscode and found this source.

Heres what I got in form load

Code:
picTest.Picture = picMainMenu.Picture

    With BF

        .BlendOp = AC_SRC_OVER

        .BlendFlags = 0

        .SourceConstantAlpha = 50

        .AlphaFormat = 0

    End With

    RtlMoveMemory lBF, BF, 4

    AlphaBlend picTest.hdc, 0, 0, picTest.ScaleWidth, picTest.ScaleHeight, picScreen.hdc, 0, 0, picScreen.ScaleWidth, picScreen.ScaleHeight, lBF

    picMainMenu.Refresh

    picTest.Refresh

    picScreen.Refresh

I want MainMenu to alphablend with the screen... should I use picScreen or something else to get that?

Right now it just shows the mainmenu but no effects... it compiles fine and all. I also have the calls that are needed on mod Constants. If you want to see them let me know.